The Polaroid MID2809PXE4 is a 9" tablet which is clearly marked
Polaroid MID2809PXE4 on the back. It features a 9" 16:9 800x480 LCD,
A23 Soc, 1GB RAM, 8GB NAND, gsl3670 touchscreen and esp8089 wifi.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
arch/arm/boot/dts/Makefile | 1 +
.../boot/dts/sun8i-a23-polaroid-mid2809pxe04.dts | 243 +++++++++++++++++++++
2 files changed, 244 insertions(+)
create mode 100644 arch/arm/boot/dts/sun8i-a23-polaroid-mid2809pxe04.dts
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 88f511c..a354f7c 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -689,6 +689,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
sun8i-a23-gt90h-v4.dtb \
sun8i-a23-ippo-q8h-v5.dtb \
sun8i-a23-ippo-q8h-v1.2.dtb \
+ sun8i-a23-polaroid-mid2809pxe04.dtb \
sun8i-a23-q8-tablet.dtb \
sun8i-a33-et-q8-v1.6.dtb \
sun8i-a33-ga10h-v1.1.dtb \
diff --git a/arch/arm/boot/dts/sun8i-a23-polaroid-mid2809pxe04.dts b/arch/arm/boot/dts/sun8i-a23-polaroid-mid2809pxe04.dts
new file mode 100644
index 0000000..cb5daaf
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-a23-polaroid-mid2809pxe04.dts
@@ -0,0 +1,243 @@
+/*
+ * Copyright 2016 Hans de Goede <hdegoede@xxxxxxxxxx>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+#include "sun8i-a23.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/pinctrl/sun4i-a10.h>
+#include <dt-bindings/pwm/pwm.h>
+
+/ {
+ model = "Polaroid MID2809PXE04 tablet";
+ compatible = "polaroid,mid2809pxe04", "allwinner,sun8i-a23";
+
+ aliases {
+ serial0 = &r_uart;
+ };
+
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ pinctrl-names = "default";
+ pinctrl-0 = <&bl_en_pin_mid2809>;
+ pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
+ brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
+ default-brightness-level = <8>;
+ enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+};
+
+&ehci0 {
+ status = "okay";
+};
+
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins_a>;
+ status = "okay";
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins_a>;
+ status = "okay";
+};
+
+&lradc {
+ vref-supply = <®_vcc3v0>;
+ status = "okay";
+
+ button@200 {
+ label = "Volume Up";
+ linux,code = <KEY_VOLUMEUP>;
+ channel = <0>;
+ voltage = <200000>;
+ };
+
+ button@400 {
+ label = "Volume Down";
+ linux,code = <KEY_VOLUMEDOWN>;
+ channel = <0>;
+ voltage = <400000>;
+ };
+};
+
+&mmc0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_mid2809>;
+ vmmc-supply = <®_dcdc1>;
+ bus-width = <4>;
+ cd-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; /* PB4 */
+ cd-inverted;
+ status = "okay";
+};
+
+&pio {
+ bl_en_pin_mid2809: bl_en_pin@0 {
+ allwinner,pins = "PH6";
+ allwinner,function = "gpio_in";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
+
+ mmc0_cd_pin_mid2809: mmc0_cd_pin@0 {
+ allwinner,pins = "PB4";
+ allwinner,function = "gpio_in";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
+ };
+};
+
+&pwm {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pwm0_pins>;
+ status = "okay";
+};
+
+&r_rsb {
+ status = "okay";
+
+ axp22x: pmic@3a3 {
+ compatible = "x-powers,axp223";
+ reg = <0x3a3>;
+ interrupt-parent = <&nmi_intc>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ eldoin-supply = <®_dcdc1>;
+ };
+};
+
+&r_uart {
+ pinctrl-names = "default";
+ pinctrl-0 = <&r_uart_pins_a>;
+ status = "okay";
+};
+
+#include "axp22x.dtsi"
+
+®_aldo1 {
+ regulator-always-on;
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-name = "vcc-io";
+};
+
+®_aldo2 {
+ regulator-always-on;
+ regulator-min-microvolt = <2350000>;
+ regulator-max-microvolt = <2650000>;
+ regulator-name = "vdd-dll";
+};
+
+®_aldo3 {
+ regulator-always-on;
+ regulator-min-microvolt = <2700000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc-pll-avcc";
+};
+
+®_dc1sw {
+ regulator-name = "vcc-lcd";
+};
+
+®_dc5ldo {
+ regulator-always-on;
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <1400000>;
+ regulator-name = "vdd-cpus";
+};
+
+®_dcdc1 {
+ regulator-always-on;
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-name = "vcc-3v0";
+};
+
+®_dcdc2 {
+ regulator-always-on;
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <1400000>;
+ regulator-name = "vdd-sys";
+};
+
+®_dcdc3 {
+ regulator-always-on;
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <1400000>;
+ regulator-name = "vdd-cpu";
+};
+
+®_dcdc5 {
+ regulator-always-on;
+ regulator-min-microvolt = <1500000>;
+ regulator-max-microvolt = <1500000>;
+ regulator-name = "vcc-dram";
+};
+
+®_rtc_ldo {
+ regulator-name = "vcc-rtc";
+};
+
+&simplefb_lcd {
+ vcc-lcd-supply = <®_dc1sw>;
+};
+
+/*
+ * FIXME for now we only support host mode and rely on u-boot to have
+ * turned on Vbus which is controlled by the axp223 pmic on the board.
+ *
+ * Once we have axp223 support we should switch to fully supporting otg.
+ */
+&usb_otg {
+ dr_mode = "host";
+ status = "okay";
+};
+
+&usbphy {
+ status = "okay";
+};
--
2.7.2
--
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